Cyotek WebCopy is a free tool for copying full or partial websites locally onto your harddisk for offline viewing.

WebCopy will scan the specified website and download it's content onto your hardisk. Links to resources such as stylesheets, images, and other pages in the website will automatically be remapped to match the local path. Using its extensive configuration you can define which parts of a website will be copied and how.

HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility. It allows you to download a World Wide Web site from the Internet to a local directory, building recursively all directories, getting HTML, images, and other files from the server to your computer. HTTrack arranges the original site's relative link-structure. Simply open a page of the 'mirrored' website in your browser, and you can browse the site from link to link, as if you were viewing it online. HTTrack can also update an existing mirrored site, and resume interrupted downloads. HTTrack is fully configurable, and has an integrated help system. WinHTTrack is the Windows 2000/XP/Vista/Seven/8 release of HTTrack, and WebHTTrack the Linux/Unix/BSD release.

Scrapy Cloud, our cloud-based web crawling platform, allows you to easily
deploy crawlers and scale them on demand – without needing to worry about
servers, monitoring, backups, or cron jobs. It helps developers like you
turn over two billion web pages per month into valuable data.